Need to figure out the best time for a conference call across time zones? Want to count the days between two dates? TimeAndDate.com is one of those all-in-one web tools that seems almost old-fashioned now, but it's quite handy.

Google and Wolfram Alpha can perform some of TimeAndDate.com's functions through relatively quick searches, but this dashboard-style site gives you many more options and inter-linked tools for planning out travel, orienting yourself when you get there (time, currency, weather, etc.), and setting up things like day-to-day countdowns and timers. It's a great bookmark, and perhaps a replacement for widgets or utilities you keep on your system for just a few small purposes.